Yokogawa EJA110E - Manual (Page 16)

<2. Handling Cautions>
2-8
IM 01C25B01-01E
2.9.3 ATEX Certification
(1) Technical Data
a. ATEX Intrinsically Safe Ex ia
Caution for ATEX Intrinsically safe type.
Note 1. Model EJX/EJA-E Series pressure
transmitters with optional code /KS21 for
potentially explosive atmospheres:
• No. DEKRA 11ATEX0228 X
• Applicable Standard:
EN 60079-0:2009, EN 60079-11:2007,
EN 60079-26:2007, EN 61241-11:2006
• Type of Protection and Marking code:
Ex ia IIC T4 Ga
Ex ia IIIC T85 ºC T100 ºC T120 ºC Db
• Group: II
• Category: 1G, 2D
• Ambient Temperature for EPL Ga:
–50 to 60°C
• Ambient Temperature for EPL Db:
–30* to 60°C
* –15°C when /HE is specified.
• Process Temperature (Tp.): 120°C max.
• Maximum Surface Temperature for EPL Db:
T85°C (Tp.: 80°C)
T100°C (Tp.: 100°C)
T120°C (Tp.: 120°C)
• Enclosure: IP66 / IP67
Note 2 Electrical Data
• In type of explosion protection intrinsic safety
Ex ia IIC or Ex ia IIIC, only for connection to a
certified intrinsically safe circuit with following
maximum values:
Ui = 30 V
Ii = 200 mA
Pi = 0.9 W
(Linear Source)
Maximum internal capacitance; Ci = 27.6 nF
Maximum internal inductance; Li = 0 µH
Note 3. Installation
• Refer to the control drawing. All wiring shall
comply with local installation requirements.
Transmitter
Supply Safety Barrier *1
Nonhazardous Location
[Control Drawing]
Hazardous Location
+
–
+
–
F0206.ai
*1: In any safety barriers used the output current must be
limited by a resistor “R” such that Io=Uz/R.
Note 4. Maintenance and Repair
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void
DEKRA Intrinsically safe Certification.
Note 5. Special Conditions for Safe Use
WARNING
• In the case where the enclosure of the
Pressure Transmitter is made of aluminium,
if it is mounted in an area where the use of
category 1 G apparatus is required, it must
be installed such, that, even in the event of
rare incidents, ignition sources due to impact
and friction sparks are excluded.
• Electrostatic charge may cause an exlosion
hazard. Avoid any actions that cause the
gerenation of eletrostatic charge, such as
rubbing with a dry cloth on coating face of
the product.
• In case of the enclosure of the Pressure
Transmitter with paint layers, if it is mounted
in an area where the use of category 2D
apparatus is required, it shall be installed in
such a way that the risk from electrostatic
discharges and propagating brush
discharges caused by rapid flow of dust is
avoided.
• To satisfy IP66 or IP67, apply waterproof
glands to the electrical connection port.
• When the lightning protector option is
specified, the apparatus is not capable
of withstanding the 500V insulation test
required by EN60079-11. This must be taken
into account when installing the apparatus.